Improvement in machines for cutting paper



C. NEWMAN. lMachines for Cuttfi'ngPape'r.

Patented June 2,1874.

mmssas UNITED STATES PATENT OEEIG CHARLES NEWMAN, OF BRATTLEBOROUGH, lVERMONT.

IMPROVEMENT IN MACHINES FOR CUTTING PAPER.

Specilication forming part of Letters Patent No. 151,668, dated June 2, 1874; application tiled November 29, 1873.

To all whom it may concern:

Beit known that I, CHARLES NEWMAN, of Brattleborough, in the State of Vermont, have invented Improvements in Paper-Cutting Device, of which the following is a specification:

The object of my invention is to provide a paper-machine with a cutting device, which consists of a movable frame, which is pivoted at one end, and having a knife secured to its front part, against the edge of which a revolving knife strikes as it passes around to cut the endless strip of paper passing through or out of the machine into sheets of the desirable length. A cam attached to one of the toothed wheels with which the device is provided opcrates to raise the pivoted frame and knife attached thereto as the cam revolves and strikes against the frame, so that the two knives come into contact at their edges and cut the paper, when the cam is used, only at each alternate revolution of the revolving knife, Vwhile at each other alternate revolution of the knife the cam strikes the pivoted frame and raises the knife, permitting the paper to pass between the knives without being cut.

In the drawings, Figure lis a front view of my invention as arranged for application to a paper-machine. Fig. 2 is a vertical section through line L of Fig. 1,' and Fig. 3 is a side view of the toothed wheel having the cani. attached thereto which raises the upper knife.

A represents the frame of a paper-machine, in which the shaft H has its bearing at each end, and to which is pivoted at f the vibrating frame D, to the front part of which is se cured the knife E. The shaft H is provided with two disks or arms, I, which support the revolving knife F, and the shaft is also provided with a toothed wheel, a. A larger toothed wheel, o, has a bearin g also in the side of the frame, and engages with the teeth of the wheel a, and a spring, C, compresses or forces down the pivoted frame D upon the stop e, so that as the knife F revolves its upper edge comes in contact with the lower edge of the knife E, and a strip of paper passing between the knives is cut into sheets of a length according to the speed of the paper in passing from the machine and the rapidity of revolution of the knife F. Sometimes, however, it is desirable to double the length of the sheets without changing the rotation of the knife F, and to accomplish this a cani, I), is secured to the wheel c, so that as the knife F passes the knife E at one revolution, the knives come in contact, and the paper is cut, and at the next revolution of the knife F the cam b, inY revolving with the wheel c, strikes against the lower side of the pivoted frame I), to which the knife E is attached, and raises the latter, so that as the knife F passes the knife E without touching it, the paper is not cut.

By this arrangement the sheets of paper may be cut of twice the length they are cut without the cam.

By a simple arrangement of different sizes of the wheels a and c. takingoif one set, a and c, and supplying their places with others of dii'erent sizes, the sheets of paper may be out of any desired length without any trouble whatever in changing any other part of the machine.

Having thus described my invention, what I claim as new is- The combination of the movable frame I), and the knife E attached thereto, with the revolving knife F, wheel a, and the wheel c, provided with the cam b, which operates to raise the knifeE to cut sheets of paper of the desired length, substantially as set forth.

CHARLES NEWMAN.

Witnesses:

N. C. SAWYER, G. H. NEWMAN. 

